Stay-guiding attachment tor sewing-machines



s. M. NASH. SUV GUIDING ATTACHMENT FOR SEWING MACHINES.

APPLICATION FILED MAI. 5.191.

1,317,889. Patented Oct. 7,1919.

"aka/$7 A TTORNEY UNITED STATES PATENT OFFICE. I

GUY M. EASE-1,01 HAVEBHILL, MASSAGHUSETTS, ASSIGNOB TO THE SINGER MANUFAC- TUBING GOM-PANY, A QORPORATION OF NEW JERSEY.

STAY-GUIDING ATTAGHMENT FOB SEWING-MACHINES.

To all whom itmay'concem:

Be it known that I, GUY M. NASH, a citizen of the United States, residing at Haverhill, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Stay-Guiding Attachments for Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to guides for sewing machines and more particularl to guides for attaching eyelet stays to s oelinings.

The invention has for its primary object to provide stay-guiding devices adapted to retard one edge of a stay-strip so that when applied to a shoe lining it conforms to the s ape of the free edge thereof and remains unpuckered.

The stay-guiding devices, consist of a plurality of slotted guides, secured in successive order, upon the cloth-plate of a sewing machine so as to be adjustable transversely of the line of seam-formation. Each of the guides is formed with an opening in the upper wall of its guiding slot, entered by a pressure-member. The pressure-member of the advance guide is carried by an arm secured to the guide, and the pressure-member of the other guide is loosely positioned in the opening referred to and is held within said opening by an arm secured-to the guide.

The primary function of the pressure-member is to bear upon the stay-strip and by retarding its passage to the needle to stretch the inner edge thereof so that it will conform to the shape of the free edge ofthe shoe lining without forming puckers or wrinkles.

In the accompanying drawings, Figure 1 is a top plan view of a portion of a sewing machine cloth-plate and the attached guides. Fig. 2 is an end elevation of the same. Fig. 3 is a detail view in perspective of the ad vance guide and pressure-member. Fig. 4 is a detail view in perspective of the second guide and pressure-member. Fig. 5 is a view illustrating a shoe lining and attached stay-strips.

The sewing machine, as usual, is constructed with a cloth-plate 1 and a throatlate 2, through a slot in which operates the ower feed-dog 3. Above the cloth-plate is positioned the work-holding Presser-foot 4 and the upper feeding-foot 5. The stitch- Specificati/on of Lettersl'atent.

Patented Oct. 7,1919.

forming mechanism comprises a needle 6 c0- operating with the loop-taker 7 of well known construction. The operation of the stitch-forming and feeding mechanisms is unessential to an understanding of the present invention and detailed reference thereto is deemed unnecessary.

Secured upon the cloth-plate by screws as 8, so as to be adjustable transversely of the line of feed is the advance guide 9 for a stay-strip s. The guide 9 is formed with a slot 10 for the passage of the stay-strip, the outer edge-guiding walls of said slot being inclined to a vertical plane containing the path of movement of the feed-dog. The upper wall of the slot 10 is partly cut away to form an opening 11 for the entrance of a pressure-block or -member 12 carried by the arm 13, secured upon the guide 9 by means of the screw 14 and steady pin 15. The pressure-member 12 is adapted to bear upon the stay-strip near one edge thereof in advance of and insubstantial alinement with the line of seamformation and by retarding its free passage through the slot 10, stretch the edge of the stay-strip having the greater radius of curvature when secured so that it will conform to the curvature of the edge of the material to which it is bein attached without forming puckers or wrin les.

The action upon the stay-strip of the pressure-member 12 is accentuated by an additional pressure-block or -member 16, entering a rectangular opening 17 forming in a second stay-guide 18 and in the upper wall of the stay-passage slot 19 thereof. The edge-guiding walls of the slot 19 are inclined in the same direction as that of the outer edge-guiding wall of the slot 10. The

pressure-member 16 is formed separately from a retaining plate 20, adapted to bear upon it, thereby permitting the member 16 to accommodate itself to a slight extent to the direction of feed of the stay-strip. The second stay-guide 18 is secured upon the cloth-plate 1 by means of a screw 21 so as to be adjustable transversely of the line of feed and the retaining late 20 is rigidly secured upon the stay-gui e 18 by means of a screw 22 and a steady pin 23.

The edge 24 of the stay-guide 18 is beveled to facilitate the leading-in to'the needle of the lining Z andupper stay-strip s which pass over the stay-guides and thence underneath the presser-foot. The pressure-members 12 and 16 are beveled on their stripengaging surfaces and in such a manner as to exert the greatest pressure upon that portion of the strip nearest its stitched edge. This construction causes the ressure-members to tend to crowd the strip against the left-hand guiding walls of the slots 10 and 19, as viewed from Fig. 1, and causes the lower staystrip s to readily follow the direction of the upper stay-strip s and the shoe lining Z as they are manually guided according to the shape of the free e ge of the shoe lining.

The upper stay-strip s is usually cut to conform to the shape of the free edge of the lining, but the lower stay-strip 8 consists of bias cut material with straight edges. The stretched lower strip ada ts itself to the shape of the free edge of t e lining as it is stitched to the latter, assuming its re uired position owing to the elasticity o the stretched bias strip, and being retained in such position by the stitches.

Having thus set forth the nature of the invention, what I claim herein is- 1. A sewing machine attachment for se curigng a strip of material in a curved path to a body material, comprisin a guide for directing the strip of materia and means for stretching the edge of the strip having the reater radius of curvature when secure 2. A sewing machine attachment for securin a strip of material in a curved path to a ody material, comprising a guide for directing the strip of material, and a plurality of successively acting pressure members ada ted to stretch the edge of the strip having t e greater radius of curvature when secured.

3. In a. sewing machine for securing a strip of material in a curved path to a body material, in combination, stitch-forming mechanism, a feed-do a guide having an edge-guiding wall inc ined to the direction Come! 0! this patent may be obtained for of travel of the feed-dog during its feeding movement, and means for stretching the edge of the strip having the greater radius of curvature when secured.

4. In a sewing machine for securing a strip of material in a curved path to a body material, in combination, stitch-forming mechanism, a feed-dog, a plurality of successively acting guides havmg ed e-guiding walls inclined to the direction 0 travel of the feed-dog during its feeding movement, and a plurality of successively acting pres sure members adapted to retard and stretch the edge of said strip having the greater radius of curvature when secured.

5. A sewing machine attachment for securing a strip of material in a curved path to a body material, comprising a guide formed with a guiding slot for the stri of material, an opening in one of the Wal s of said slot, and a pressure member projecting through said opening for stretching the edge of said strip having the greater radius of curvature when secured.

6. A sewing machine attachment comprising a guide for directing a strip of material, and a pressure member functioning solely to retard and stretch one edge of said strip.

7 In a sewin machine for securing a strip of material in a curved path to a body material, an attachment including a pressure member adapted to stretch the edge of the strip having the greater radius of curvature when secured.

8. A sewing machine attachment comprising a guide having an edge-guiding wall for a strip of material, and a pressure-member adapted to stretch one edge of said strip, said pressure-member having its strip-engaging surfa'ee beveled to exert the greatest pressure upon the ortion of the strip nearest the stretched e go.

In testimony whereof I have signed my name to this specification.

GUY M. NASH.

five cents each, by addressing the "Oommiasioner of Patents.

Washington, D. 0. 

